Just a normal One Punch Man mod. Some of Saitama's skills work only with the 'Z' key, others are activated with a click, and some use both. The Serious Punch only starts destroying blocks from a distance of 5 blocks. This was a decision I made to avoid falling into the void when using it on the ground.

AttributeFix is a recommended mod to install but not mandatory. The reason is that Minecraft limits attribute values, and the limit differs for each one.
Currently, only weight and attack knockback are significantly affected by this Minecraft system, which limits them to values of 8 and 5 respectively.
Other attributes like running speed and swimming have high default limits of 1024 that most players will never reach.
With knockback resistance of 1, it's already impossible to be pushed by attacks.
But if having a weight above 8 or an attack knockback above 5 is important to you, then you should download AttributeFix.
The attributes I mentioned are just the ones that can currently be configured by the Saitama player. In the future, other attributes may also be configurable, and having AttributeFix will become more important due to attributes with very low limits or attributes that need very high values to reach significant proportions.

New things added to the mod are listed in the changelog of the files, so take a look at them. The description will only be updated occasionally.

Use the command /oneutil to be saitama

Current Saitama Abilities

Weak Punch
Basic punch with low power.
Normal Punch
Standard punch with average strength.
Serious Punch
You can hit the entities directly or press Z with Serious Punch selected to use the punch even without hitting the entities directly.
Serious Flatulence
You need to activate it in the abilities menu and then use it with the default key P.
Weakening Punch
A punch with nearly the same strength as the Weak Punch, but it adjusts not to kill the entity and leaves it with minimal health (it does not take into account effects like resistance or absorption, so even with this punch, the creature can still have relevant health points). The punch will also drop the armor and items in the mob or player’s main and secondary hand.
Quick Backstab
Aim at an entity and use the default key Z. This will teleport you to the entity and then execute a normal punch on it.
Super Speed
Increases your movement speed significantly.
Fast Block Breaking
Breaks and drops any block with a single hit.

Serious Punch Range
The range of the Serious Punch uses block loading as parameters, so how far it travels in a direction depends on the chunk loading. Therefore, low render distances will result in a shorter traveled distance. Note that the Serious Punch travels through loaded blocks or blocks that will be loaded by the server, so it can go slightly beyond visible chunks and continue further if it encounters a chunk loaded by block or another player.

One Punch Crafts